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Topic: Analog data

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	U.S. Patent: 5007042 - Method and apparatus for transmitting analog data embedded in a digital pulse train - April 9, ...
		An analog zero voltage reference level pulse and an analog high voltage reference level pulse are transmitted in the same pulse train as the analog data in some embodiments, to ensure accurate interpretation of the data, eliminating effects of component drifts in sensitive analog circuits.
		The analog data is carried as the width of the digital pulses in the pulse train and analog identification data is carried in the width of one or more of the sync pulses.
		Analog data is input to pins 5 and 14 for one channel and to pins 4 and 11 for another channel.
	www.everypatent.com /comp/pat5007042.html (6705 words)

	Data signal recording and/or reproducing method and system operable with analog and/or digital data signals - Patent ...
		Analog recording means are responsive to the analog output signal for performing a preselected process to form a second analog data signal and recording the second analog data signal on the recording medium.
		In a further embodiment when a digital data signal or an analog data signal is recorded on high-performance magnetic tape, in the digital recording means, a first recording specification for performing signal processing in which a digital data signal is recorded as a bit stream is selected.
		In the analog recording means, a third recording specification for performing signal processing is selected in which the first or the second analog data signal is recorded over a standard frequency bandwidth.
	www.freepatentsonline.com /6266477.html (6857 words)

	Chapter 5 - Data Communciations
		As mentioned earlier, analog waves are less susceptible to attenuation problems, but occasionally they have to be amplified.
		The analog data is detected by another modem which receives and decodes the data on the analog signal.
		Multiplexing is the process of putting data from several different sources on the same wire, or, in some cases, putting a large amount of data from a single source on several smaller bandwidth wires.
	www.netguru.net /courses/ntc/NTCC5.htm (5276 words)

	Stallion Support Services: glossary of terms
		Analog refers to electronic transmission accomplished by adding signals of varying frequency or amplitude to carrier waves of a given frequency of alternating electromagnetic current.
		This data rate far exceeds that of the prevalent 28.8 and 56 Kbps telephone modems and the up to 128 Kbps of ISDN and is about the data rate available to subscribers of Digital Subscriber Line (DSL) telephone service.
		Data Encryption Standard (DES) is a widely-used method of data encryption using a private (secret) key that was judged so difficult to break by the U.S. government that it was restricted for exportation to other countries.
	www.stallion.com /html/support/glossary.html (2777 words)

	Data Converters: Analog Front Ends, Analog to Digital and Digital to Analog Conversion, Sample and Hold Amplifiers
		Data Converters: Analog Front Ends, Analog to Digital and Digital to Analog Conversion, Sample and Hold Amplifiers
		Intersil's family of data converters is well suited for applications that require high performance analog-to-digital and digital-to-analog conversion.
		For designs in the communication, video, imaging, sensor, display, or audio fields, we have a data converter that will help produce the truest signal transition available.
	www.intersil.com /converters (61 words)

	U.S. Geological Survey Open-File Report 94-645
		ANALOG provides the user with flexibility in input data format, output data content, and choice of distance measure, and allows the user to determine which taxa from each modern and fossil data file are compared.
		ANALOG is controlled by a user-supplied run description file whose name is given as the argument on the command line.
		Data file B has variables C, Da, Db, and E. In order to calculate distance coefficients properly, the variables must be the same in each data set.
	pubs.usgs.gov /of/1994/of94-645 (4175 words)

	Data Collection - ADC and Communicating with a PC (Site not responding. Last check: 2007-10-11)
		Data Collection - ADC and Communicating with a PC Iguana Labs will be closing its doors for good around August 11th.
		It uses an ADC0804 chip to convert from analog to digital, an AT89C2051 microcontroller to control the ADC0804 and send data to the PC, and a MAX232CPE chip to convert the signals from and to RS232 levels for sending and receiving from the PC.
		The analog voltage is applied to pin 6 and the result is available at pins 11 through 18.
	www.iguanalabs.com /adc2051.htm (1531 words)

	Analog/Digital Data (Site not responding. Last check: 2007-10-11)
		The amount of expansion is said to be analogous to an increase in temperature - hence it is called an "analog" device.
		You are suddenly required to "convert" your "analog impression" to a discreet value to which words (or numbers) can be put.
		So, we are already expert at converting analog data to digital data, and in some cases, like the Fahrenheit or Celsius temperature scales, have the numerical values to make that conversion.
	www.minoxlab.com /Don_Krehbiel/mpl/digital/analog.htm (373 words)

	Continuously Acquire Analog Data Using Buffers and Charting the Results - Example - Development Library - National ...
		Data is continuously acquired into a circular buffer at the same time that data previously retrieved from the buffer is plotted.
		If the buffer is too small or you are not reading data from it fast enough, your data will be overwritten by new data before you have a chance to read it (overwrite error).
		A common reason to read data while the acquisition is in progress is to process and display the data in pseudo-real time.
	sine.ni.com /apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3E8F156A4E034080020E74861&p_node=201248&p_source=external (558 words)

	Analog Devices: Press Releases: New Analog Devices Data Converter Increases Cellular Coverage And Reduces Dropped Calls ...
		ADI’s data converters are used widely in consumer electronics, broadband and wireless communications, instrumentation, automotive systems, industrial equipment and medical electronics, as well as a host of other emerging market applications.
		Celebrating 40 years as a leading global manufacturer of high-performance integrated circuits used in analog and digital signal processing applications, Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world.
		Analog Devices' common stock is listed on the New York Stock Exchange under the ticker “ADI” and is included in the S&P 500 Index.
	www.analog.com /en/press/0,2890,3__66007,00.html (989 words)

	BitScope 440 Networked Data Acquisition System
		Wherever your data sources are located, low cost 100 BaseT ethernet switches and hubs are all you need to connect together hundreds of analog and digital channels to a single PC.
		Whether you're acquiring data or monitoring events at very low rates (<1Hz) for very long periods or working up at the much high speeds of modern communications technologies or circuit logic, or anywhere in between, BitScope 440 is the ideal scalable user programmable data acquisition and process monitoring solution.
		Analog bandwidth refers to the bandwidth of the analog input circuitry.
	www.bitscope.com /product/BS440 (573 words)

	Analog Output (Data Acquisition Toolbox) (Site not responding. Last check: 2007-10-11)
		Specify the per-channel rate at which digital data is converted to analog data.
		You control the rate at which an analog output subsystem converts digital data to analog data is controlled with the
		For analog output objects, a trigger is defined as an event that initiates the output of data from the engine to the analog output hardware.
	www.ece.umr.edu /computing/unix/software/matlab/toolbox/daq/c6_ao5.html (491 words)

	USB data-acq modules synchronously sample multiple analog signals
		On USB 2.0, however, Data Translation's wares support accurate simultaneous data acquisition with up to 5MHz aggregate speed, correlating measurements from channel to channel with minimum phase errors.
		Synchronous operation lets all I/O data be processed and correlated for all inputs and outputs, so that you can determine response across a DUT's (device-under-test) nodes at the same instant.
		As well, the input-impedance of each channel is closely matched to that of the other channels (Data Translation notes that the slightest mismatch would result in DC and AC errors in measurement when trying to correlate readings at any instant in time).
	www.eetasia.com /ART_8800408458_480400_3d591cc5.HTM?from=RSS (1253 words)

	Apparatus for transmitting digital data in analog form (EP0407031B1)
		A transmitter receiving digital data in parallel multibit words converts digital words in conversion clock cycles to a single analog signal relative to a DC level.
		The transmitter also includes a reference pulse generator which combines a reference pulse with the analog levels generated by the converter to form an analog output for transmission to the receiver.
		Thus, by using a digital to analog to digital systems, effective bit rates are achieved that are higher than the switching speeds of the transmitter and receiver.
	www.delphion.com /details?&pn=EP00407031B1 (422 words)

	Data Processing
		Time series derived from both analog and digitally recorded data have been shifted to have zero mean; and have been converted from digitization units or volts to units of cm/sec/sec (ordinates) and seconds (abscissas).
		We have determined that the acceleration data being acquired even by these newer digital strong motion instruments are in some cases subject to small baseline instabilities, often appearing as step-like or transient offsets.
		The most significant departures of this new scheme from previous methods used by NSMP for digital data derived from analog recordings are the fitting of a quadratic instead of a linear function to velocity to obtain the baseline correction for acceleration, the use of a causal instead of an acausal (bi-directional) Butterworth filter.
	nsmp.wr.usgs.gov /processing.html (1480 words)

	MLT 2400A Analog Modem Data Monitor, Sniffer, Analyzer, Debugger (Site not responding. Last check: 2007-10-11)
		The MLT data output can be viewed using a PC with a serial port or a data scope analyzer.
		Communications data is sent across the RS232 connection for the PC application to display.
		Although any communications package can be used to monitor the MLT data flow, the supplied communications program allows the user to differentiate the originate from the answer side messages by using different colors for display.
	www.aalogic.com /mltmain.html (398 words)

	KarbosGuide.com. Module 1a. About data.
		The PC's function is simple: to process data, and the processing is done electronically inside the CPU and between the other components.
		All this data is in its nature analog, which means that it varies in type.
		If we can translate our daily data from their analog format to digital format, they will appear as chains of 0s and 1s, then the PC can handle them.
	www.karbosguide.com /hardware/module1a1.htm (405 words)

	DAQ System acquires network and analog data simultaneously., HEM Data Corp.
		DAWN not only acquires data from the vehicle’s sensors via the network, but also allows the user to add his sensors to acquire this information directly with A/D hardware.
		As this data is acquired, DAWN will display the data in real-time as a Y-T or X-Y plot, as a stripchart, or as a meter (digital, analog or bar).
		Data can be acquired from the vehicle or from a subsystem on a test bench.
	news.thomasnet.com /fullstory/454891/2863 (944 words)

	Bjork: "Development of a High-Speed Multi-Channel Analog Data Acquisitioning Architecture" (Site not responding. Last check: 2007-10-11)
		The high volume of data, the resolution requirements for science data, and the complexity of the in-situ processing and analysis requirements have triggered the need for faster, smaller, and easily reconfigurable designs.
		In particular, the need for a high-speed multi-channel analog data acquisition system that can perform DSP functions and employ analog shaping is a widespread need for spacecraft and instrument computers.
		In general, possible applications are to any type of instrument whose output is an analog waveform where the science is related to a characteristic of the analog waveform, such as pulse height, rise time, and area of the pulse.
	klabs.org /mapld05/abstracts/1021_bjork_a.html (446 words)

	Analog-Signal Data Acquisition in Industrial Automation Systems - Maxim/Dallas
		Despite the availability of the digital field bus in several versions, industrial control systems continue to employ standard analog signals for transmitting data between the process and the control equipment.
		Because these devices are digital systems operating with process-specific software, all analog signals must be converted to digital numbers before a computer can read them.
		A/D conversion in a control system is performed by boards or boxes called "analog peripherals." They connect to the CPU via the system's back-plane bus, or a field bus if mounted remotely (on a machine, for example).
	www.maxim-ic.com /appnotes.cfm/appnote_number/270 (1831 words)

	Atmel Corporation
		The dual Analog Digital Converter is dedicated to high-speed, low-power applications such as digital sampling oscilloscopes and direct RF down-conversion.
		Furthermore, the 3 GHz analog input bandwidth allows operation in second Nyquist zone with remarkable performance at up to 1.5 GHz input frequency, making it a fully functional broadband analog data converter.
		The AT84AS004 10-bit 2 Gsps Analog Digital Converter with 1:2/4 DMUX is an upgrade of the AT84AS003 10-bit 1.5 Gsps Analog Digital Converter with 1:2/4 DMUX to allow users to work at 2 Gsps sampling frequency.
	www.atmel.com /dyn/products/devices.asp?family_id=611 (948 words)

	Getting Started with Analog Input (Data Acquisition Toolbox) (Site not responding. Last check: 2007-10-11)
		Suppose you must verify that the nominal frequency of a sine wave generated by a function generator is 1.00 kHz.
		For this example, you will acquire 1 second of data on one input channel.
		is issued, you should begin inputting data from the function generator into the data acquisition board.
	www.ece.umr.edu /computing/unix/software/matlab/toolbox/daq/c4_gsa15.html (311 words)

	Example of an Analog Amplitude Data File (Site not responding. Last check: 2007-10-11)
		Here is the analog amplitude data file for the CUSP event 3217586.
		The first line of the analog file contains the data that was produced by the Isaiah system.
		The distance from the station to the epicenter given in the data header
	www.gps.caltech.edu /calren/richter/radatafile.html (424 words)

	EEProductCenter.com :: USB data-acq modules synchronously sample multiple analog signals
		Each analog channel in the DT9832 Series has its own 16-bit A/D converter that utilizes a common clock and trigger for simultaneous and synchronous sampling of all analog and digital inputs at the exact same instant in time.
		On USB 2.0, however, Data Translation's wares support accurate simultaneous data acquisition with up to 5-MHz aggregate speed, correlating measurements from channel to channel with minimum phase errors.
		Analog signal bandwidth (at the -3-dB points) is greater than 6.25-MHz.
	www.eeproductcenter.com /showArticle.jhtml?articleID=180207017 (1670 words)

	Your Personal PLC Tutor Site - Interactive Q & A - "S-7 200 Analog data to EXCEL"
		I was envisioning a system where the computer running the HMI software was permanently connected to your test machine, so that whenever you run a test, the software can archive the data you collect.
		Generally, if you can archive the data, you get to specify the format of the archive file, like.csv.
		If the PLC has enough data storage capacity, you could store all your sampled data in the PLC until you connect a laptop running an app that can download the data, save it as a.csv or.xls file and then clear the PLC storage registers.
	www.plcs.net /dcforum/DCForumID5/858.html (477 words)

	Analog Data Acquisition and Analog Data Acquisitions at eTesters
		Analog Data Acquisition and Analog Data Acquisitions at eTesters
		National Instruments today released its first M Series data acquisition (DAQ) devices for the USB bus Â— two new external DAQ devices that offer up to 32 analog input channels and data acquisition rates of up to 1.25 MS/s.
		Prevent Fictitious Frequencies and Noise From Tainting Your Measurements Marlboro, MA USA -- Data Translation's DT9841E is a low-cost, real-time data acquisition USB module with delta-sigma A/D and D/A converters that provide anti-aliasing filters.
	www.etesters.com /topics/view.cfm/topic/Analog_Data_Acquisition (245 words)

	TC8800 Telephone/Data Fiber Multiplexer - Fiber Optic Modems, Multiplexers, Multidrop (SCADA) Modem, RS-232, RS-422, ...
		The TC8800 is typically used to link or extend data and telephone lines in campus networks.
		The TC8800 is a 4-to-28 channel telephone and data fiber optic multiplexer that extends multiple telephone lines, analog and data channels to remote sites such as other buildings in campus networks.
		RJ-11F ports are provided on the rear side to connect with telephones, analog and data devices.
	www.tccomm.com /TC8800.htm (451 words)

	Amazon.com: Data Conversion Handbook (Analog Devices): Books: Engineering Staff Analog Devices Inc. (Site not responding. Last check: 2007-10-11)
		Covering data converter fundamentals, techniques, applications, and beginning with the basic theoretical elements necessary for a complete understanding of data converters, this reference covers all the latest advances in the field.
		It is difficult to determine exactly when the first data converter was made or what form it took.
		The Data Conversion Handbook is based on the book, Analog-Digital Conversion, a comprehensive set of notes for a recent Analog Devices seminar series on data converters.
	www.amazon.com /exec/obidos/tg/detail/-/0750678410?v=glance (1555 words)

	Data Acquisition Systems and Solutions with WinDaq Software
		View all our USB Data Acquisition products at a glance to see which system is right for your application.
		Data Acquisition Short Form Catalog Browse a copy of our short form catalog in PDF format.
		DI-730 Series Our most popular data acquisition system for maintenance and troubleshooting applications, this product can be found in steel mills, aluminum mills, transportation systems and more.
	www.dataq.com (267 words)

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